1447 has 2 divisors, whose sum is σ = 1448. Its totient is φ = 1446.

The previous prime is 1439. The next prime is 1451. The reversal of 1447 is 7441.

Subtracting from 1447 its sum of digits (16), we obtain a triangular number (1431 = T_{53}).

Adding to 1447 its reverse (7441), we get a palindrome (8888).

It can be divided in two parts, 144 and 7, that added together give a palindrome (151).

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1447 - 2^{3} = 1439 is a prime.

It is a plaindrome in base 10 and base 15.

It is a nialpdrome in base 13 and base 14.

It is a self number, because there is not a number *n* which added to its sum of digits gives 1447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723 + 724.

It is an arithmetic number, because the mean of its divisors is an integer number (724).

1447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447 is an equidigital number, since it uses as much as digits as its factorization.

1447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112, while the sum is 16.

The square root of 1447 is about 38.0394532032. The cubic root of 1447 is about 11.3107006998.

The spelling of 1447 in words is "one thousand, four hundred forty-seven", and thus it is an iban number.

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